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<a name="boost_asio.reference.as_tuple_t.as_tuple_t.overload1"></a><a class="link" href="overload1.html" title="as_tuple_t::as_tuple_t (1 of 2 overloads)">as_tuple_t::as_tuple_t
          (1 of 2 overloads)</a>
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<p>
            Default constructor.
          </p>
<pre class="programlisting"><span class="keyword">constexpr</span> <span class="identifier">as_tuple_t</span><span class="special">(</span>
    <span class="identifier">default_constructor_tag</span>  <span class="special">=</span> <span class="identifier">default_constructor_tag</span><span class="special">(),</span>
    <span class="identifier">CompletionToken</span> <span class="identifier">token</span> <span class="special">=</span> <span class="identifier">CompletionToken</span><span class="special">());</span>
</pre>
<p>
            This constructor is only valid if the underlying completion token is
            default constructible and move constructible. The underlying completion
            token is itself defaulted as an argument to allow it to capture a source
            location.
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        Distributed under the Boost Software License, Version 1.0. (See accompanying
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